The main advantages of the elastomer / rubber O-ring are its low weight, its low space requirement, its high media and temperature resistance and its favourable price-performance ratio. The different types of O-ring seals are as follows: Static and dynamic sealing. A static seal is a seal in which the coupling elements are not subject to any corresponding displacement. A dynamic seal is a seal in which the coupling elements are in corresponding movement with each other.
O-ringsCAN BE PRODUCED FROM THE FOLLOWING MATERIALS
|Material ISO 1629||Base Elastomer||Trade names Trademarks||Temperature insert (standard)|
|ACM||polyacrylate rubber||Nipol®||-20° to + 150° C|
|AEM||ethylene acrylate rubber||Vamac®||-30° to + 150° C|
|AU||polyester urethane||Adiprene®||-30° to + 90° C|
|CR||chloroprene rubber||Neoprene®||-40° to + 100° C|
|CSM||chlorosulphonyl polyethylene rubber||Hypalon®||-30° to + 120° C|
|EPDM||ethylene-propylene-diene rubber||-40° to + 140° C|
|FEPM||Tetrafluoroethylene-propylene copolymer rubber||Aflas®||-30° to + 200° C|
|FFKM||perfluor rubber||HPF||-15° to + 270° C|
|FKM||fluorinated rubber||Viton®||-20° to + 200° C|
|FVMQ||fluorosilicone rubber||Silastic®||-45° to + 175° C|
|HNBR||Hydrogenated nitrile butadiene rubber||-15° to + 150° C|
|IIR||butyl rubber||Polysar Buthyl®||-40° to + 130° C|
|NBR||nitrile butadiene rubber||-25° to + 100° C|
|PTFE||polytetrafluoroethylene||Teflon®||-200° to + 260° C|
|SBR||styrene-butadiene rubber||Intol®||-40° to + 100° C|
|VMQ||Methyl vinyl rubber / silicone||Siloprene®||-50° to + 210° C|
Mineral oils, (engine, transmission and ATF oils), aging and ozone
Aromatic and chlorinated hydrocarbons, brake fluids, hot water, water vapor, acid and alkaline solutions
Water, aqueous solutions at low temperatures Refrigerant, aging and ozone
Aromatic hydrocarbons, esters ketones and glycols
Brake fluids, various acids and alkalis Hot water and steam, aging and ozone
Mineral oils and fats, natural gas, linoleic acid, ether, hexane, gasoil and freon 112
extremely high temperatures (air up to 270° C - special compounds up to 315° C) resistant to solvents and further 1600 media
Liquid oxygen, dichloroacetic acid
high temperatures up to 200° C (medium air), mineral oils, vegetable and animal fats aromatic and chlorinated hydrocarbons, aging and ozone
Brake fluids, highly polar solvents, acetone, caustic potash, formic acid, acetic acid and chlorobenzene.
Vegetable and animal fats and oils, aliphatic hydrocarbons, water and steam up to 140° C, aging and ozone
chlorinated hydrocarbons, solvents, concentrated acids/alkalis
Gasoline, mineral oils and greases, light heating oil, propane, butane, aliphatic hydrocarbons
Super fuels with high aromatic content, benzene, acetone, brake fluid, ozone.
almost all organic and inorganic chemicals (over 1800 media) high and low temperature application, weathering and aging
Alkali metals in molten or dissolved form, fluorine and fluorine compounds
high temperatures, hot air, oxygen, water, aging and ozone
Silicone oils and greases, fuels, exhaust gases
The O-ring dimensions and standard qualities we keep in stock meet the requirements of DIN 3771 Part 1-5, grade characteristic N. DIN 3771 Part 4 defines the permissible shape and surface deviations of O-rings.
Permissible defect sizes are differentiated according to the variety characteristics N and S. Unless otherwise specified, O-rings will be supplied according to grade N. These meet the requirements for standard quality.
Due to our own tool construction we have the possibility of a cost-effective and fast production of your O-ring dimensions with special tolerances from the desired or required material.
DIN 7716 (guidelines for storage, maintenance and cleaning of rubber products) applies to the storage of O-rings. Proper storage is important. The service life of O-rings can be affected by many influences, such as light, heat, humidity, oxygen, ozone, etc., and thus changed. The ideal temperature for storage is between +5 and +20 C. In general, storage in polyethylene bags welded together is considered optimal. We recommend not to exceed the following storage times significantly:
Generally recommended storage time of elastomers:
Viton®, Hypalon® and Teflon® are registered trademarks of DuPont Performance Elastomers.
The other trademarks and brand names are the property of their respective owners.